.. _obs_apis:

===========================
Observation Execution APIs
===========================

The observation execution can be done by following a sequence of APIs as follows:

* :ref:`Resource allocation <centralnode:assign_resources>`
* :ref:`Configure a scan <subarraynode:configure_mid>`
* :ref:`Perform scan <subarraynode:scan_mid>`
* :ref:`End a scan <subarraynode:end_scan_mid>`
* :ref:`Resource de-allocation <centralnode:release_resources>`

Before performing any observation related operation it is necessary that the telescope is in ON state.